Multiple memory corruption issues were addressed with improved input validation
Published Apr 2, 2021
7.8
HIGHCVSS 3.1
EPSS 2.32%
Description
Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<14.0
- Version
-
- Version unspecifiedStatusaffectedConstraints<11.0
- Version unspecifiedStatusaffectedConstraints<11.1
- Version
-
- Version unspecifiedStatusaffectedConstraints<14.0
- Version
-
- Version unspecifiedStatusaffectedConstraints<7.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apple | iOS and iPadOS | n/a |
| |||||||||
| Apple | macOS | n/a |
| |||||||||
| Apple | tvOS | n/a |
| |||||||||
| Apple | watchOS | n/a |
|
- < 14.0
- < 14.0
- ≥ 10.14 · < 10.14.6
- ≥ 10.15 · < 10.15.7
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.14.6
- 10.15.7
- 10.15.7
- ≥ 11.0 · < 11.1.0
- < 14.0
- < 7.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.32% (0.02323) | 82.89th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.32% (0.02323) | 81.19th | v5 (v2026.06.15) |
| Jun 5, 2025 | 1.26% (0.01262) | 78.42th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.65% (0.03647) | 86.76th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.85% (0.05852) | 83.83th | v4 (v2025.03.14) |
| Mar 28, 2025 | 3.65% (0.03647) | 86.77th | v4 (v2025.03.14) |
| Mar 27, 2025 | 5.85% (0.05852) | 89.18th | v4 (v2025.03.14) |
| Mar 20, 2025 | 3.65% (0.03647) | 86.85th | v4 (v2025.03.14) |
| Mar 19, 2025 | 5.85% (0.05852) | 89.36th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.65% (0.03647) | 87.06th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.18% (0.00177) | 55.28th | v3 (v2023.03.01) |
| Dec 17, 2023 | 0.18% (0.00179) | 55.04th | v3 (v2023.03.01) |
| Nov 7, 2023 | 0.16% (0.00156) | 51.95th | v3 (v2023.03.01) |
| Oct 12, 2023 | 0.14% (0.00137) | 48.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00132) | 46.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.15% (0.02150) | 80.07th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.15% (0.02150) | 78.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.15% (0.02150) | 56.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.98% (0.00984) | 26.57th | v1 |
| Jan 6, 2022 | 0.98% (0.00984) | 25.94th | v1 |
| Sep 1, 2021 | 0.98% (0.00984) | 61.78th | v1 |
| Jul 15, 2021 | 0.98% (0.00984) | 0.00th | v1 |
| Apr 14, 2021 | 0.84% (0.00844) | 0.00th | v1 |
References (6)
- http://packetstormsecurity.com/files/163501/XNU-Network-Stack-Kernel-Heap-Overflow.html x_refsource_MISCThird Party AdvisoryVDB Entry
- https://support.apple.com/en-us/HT211843 x_refsource_MISCVendor Advisory
- https://support.apple.com/en-us/HT211844 x_refsource_MISCVendor Advisory
- https://support.apple.com/en-us/HT211850 x_refsource_MISCVendor Advisory
- https://support.apple.com/en-us/HT211931 x_refsource_MISCVendor Advisory
- https://support.apple.com/en-us/HT212011 x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/163501/XNU-Network-Stack-Kernel-Heap-Overflow.html | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| https://support.apple.com/en-us/HT211843 | x_refsource_MISCVendor Advisory | |
| https://support.apple.com/en-us/HT211844 | x_refsource_MISCVendor Advisory | |
| https://support.apple.com/en-us/HT211850 | x_refsource_MISCVendor Advisory | |
| https://support.apple.com/en-us/HT211931 | x_refsource_MISCVendor Advisory | |
| https://support.apple.com/en-us/HT212011 | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.